/* Copyright (c) 2001-2004, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG, 
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


package org.hsqldb.rowio;

import java.io.IOException;

import org.hsqldb.Trace;
import org.hsqldb.lib.StringConverter;

/**
 * This class quotes strings only if they contain the quote character or
 * the separator for the field. The quote character is doubled.
 *
 * @author sqlbob@users (RMP)
 * @version 1.7.2
 * @since 1.7.0
 */
public class RowOutputTextQuoted extends RowOutputText {

    public RowOutputTextQuoted(String fieldSep, String varSep,
                               String longvarSep,
                               boolean allQuoted) throws IOException {
        super(fieldSep, varSep, longvarSep, allQuoted);
    }

    public RowOutputTextQuoted(String fieldSep, String varSep,
                               String longvarSep, boolean allQuoted,
                               String encoding) throws IOException {
        super(fieldSep, varSep, longvarSep, allQuoted, encoding);
    }

    protected String checkConvertString(String s,
                                        String sep) throws IOException {

        if (s.indexOf('\n') != -1 || s.indexOf('\r') != -1) {
            throw new IOException(
                Trace.getMessage(Trace.TEXT_STRING_HAS_NEWLINE));
        }

        if (allQuoted || s.length() == 0 || s.indexOf('\"') != -1
                || (sep.length() > 0 && s.indexOf(sep) != -1)) {
            s = StringConverter.toQuotedString(s, '\"', true);
        }

        return s;
    }
}
